ansible-roles/roles/mysql_server/tasks/main.yml

---

- name: Install MariaDB server and client
  yum:
    name:
      - mariadb-server
      - mariadb
      - MySQL-python
  notify:
    - restart mariadb
  tags: mysql

- name: Deploy backup scripts
  template: src={{ item.script }}.j2 dest=/etc/backup/{{ item.hook }}.d/{{ item.script }} mode=755
  with_items:
    - { script: 'mariadb_create_dumps.sh', hook: pre }
    - { script: 'mariadb_delete_dumps.sh', hook: post }
  tags: mysql

- name: Create system override directory
  file: path=/etc/systemd/system/mariadb.service.d/ state=directory
  tags: mysql

- name: Modify the service unit
  template: src=systemd_limits.conf.j2 dest=/etc/systemd/system/mariadb.service.d/limits.conf
  register: mysql_unit
  notify: restart mariadb
  tags: mysql

- name: Reload systemd
  systemd: daemon_reload=True
  when: mysql_unit.changed
  tags: mysql

- name: Deploy my.cnf
  template: src=my.cnf.j2 dest=/etc/my.cnf
  notify: restart mariadb
  tags: mysql

- name: Start and enable MariaDB
  service: name=mariadb state=started enabled=True
  tags: mysql

- name: Check if we need to create a password for the root user
  stat: path=/root/.my.cnf
  register: my_no_cnf
  tags: mysql

- name: Generate a random password for user root
  command: openssl rand -base64 45
  register: my_root_pass
  when: not my_no_cnf.stat.exists
  tags: mysql

- name: Set MariaDB root password
  command: mysqladmin password "{{ my_root_pass.stdout }}"
  when:
    - not my_no_cnf.stat.exists
    - my_root_pass.stdout is defined
  tags: mysql

- name: Deploy /root/.my.cnf
  template: src=root_my.cnf.j2 dest=/root/.my.cnf
  when:
    - not my_no_cnf.stat.exists
    - my_root_pass.stdout is defined
  tags: mysql

- name: Remove anonymous user
  mysql_user: name='' host_all=yes state=absent
  tags: mysql

- name: Remove the test database
  mysql_db: name=test state=absent
  tags: mysql

- name: Handle MariaDB port
  iptables_raw:
    name: mysql_port
    state: "{{ (mysql_src_ip is defined and mysql_src_ip | length > 0) | ternary('present','absent') }}"
    rules: "-A INPUT -m state --state NEW -p tcp --dport {{ mysql_port | default('3306') }} -s {{ mysql_src_ip | join(',') }} -j ACCEPT"
  when: iptables_manage | default(True)
  tags: mysql

- name: Create database admin
  mysql_user: name=sqladmin password={{ mysql_admin_pass }} host="%" priv="*.*:ALL,GRANT" state=present
  tags: mysql

- name: Create databases
  mysql_db: name={{ item }} state=present
  with_items: "{{ mysql_databases | default([]) }}"
  tags: mysql

- name: Create mysql users
  mysql_user: name={{ item.name }} password={{ item.password }} priv={{ item.privileges }} host={{ item.host | default('localhost') }} state=present
  with_items: "{{ mysql_users | default([]) }}"
  when:
    - item.name is defined
    - item.password is defined
    - item.privileges is defined
  tags: mysql

- name: Remove databases
  mysql_db: name={{ item }} state=absent
  with_items: "{{ mysql_databases_to_remove }}"
  tags: mysql

- name: Remove users
  mysql_user: name={{ item.name }} host={{ item.host | default(omit) }} state=absent
  with_items: "{{ mysql_users_to_remove }}"
  tags: mysql
...